NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
33 reportsClear category filterMileage unknown · Jan 11, 2002
Service Brakes, Hydraulic
THERE IS A VIBRATION COMING FROM THE VEHICLE DURING ACTIVATION OF THE BRAKE SYSTEM WHILE DRIVING AT ANY SPEED. DEALERSHIP HAS EXAMINED VEHICLE, AND REPLACED FRONT BRAKE ROTORS WHICH HAVE FAILED TO EFFECTIVELY REMEDY THE PROBLEM. ALSO, REAR BRAKES INTERMITTENTLY FAIL TO ACTIVATE WHILE DRIVING AT ANY SPEED , POSSIBLY RESULTING…
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THERE IS A VIBRATION COMING FROM THE VEHICLE DURING ACTIVATION OF THE BRAKE SYSTEM WHILE DRIVING AT ANY SPEED. DEALERSHIP HAS EXAMINED VEHICLE, AND REPLACED FRONT BRAKE ROTORS WHICH HAVE FAILED TO EFFECTIVELY REMEDY THE PROBLEM. ALSO, REAR BRAKES INTERMITTENTLY FAIL TO ACTIVATE WHILE DRIVING AT ANY SPEED , POSSIBLY RESULTING IN EXCESSIVE WEAR OF THE FRONT BRAKES. PLEASE PROVIDE ANY ADDITIONAL INFORMATION / DOCUMENTATION.*AK
NHTSA ODI #8001979
Mileage unknown · Nov 30, 2001
Service Brakes, Hydraulic
WHEN PRESSING BRAKES BRAKE PEDAL VIOLENTLY KICKED BACK TOWARDS THE DRIVER. PLEASE PROVIDE ANY FURTHER INFORMATION. *AK
NHTSA ODI #899735
Mileage unknown · Oct 19, 2001
Exterior LightingService Brakes, HydraulicWheels
BRAKE LIGHT AND PARKING LIGHT WERE WIRED INCORRECTLY, CAUSING OPERATION TO WORK REVERSED. BRAKE LINING BROKE OFF FROM METAL PAD WHILE DRIVING, RESULTING IN SEVERE DAMAGE TO ROTORS. ALIGNMENT WARPED ROTORS. AT 30-35MPH THE TIRE INCIDENT THREW THE CAP OFF OF REAR DRIVER SID TIRE, RESULTING IN SEVERE DAMAGE TO GAS TANK AND TIRE RI…
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BRAKE LIGHT AND PARKING LIGHT WERE WIRED INCORRECTLY, CAUSING OPERATION TO WORK REVERSED. BRAKE LINING BROKE OFF FROM METAL PAD WHILE DRIVING, RESULTING IN SEVERE DAMAGE TO ROTORS. ALIGNMENT WARPED ROTORS. AT 30-35MPH THE TIRE INCIDENT THREW THE CAP OFF OF REAR DRIVER SID TIRE, RESULTING IN SEVERE DAMAGE TO GAS TANK AND TIRE RIPPED OFF THE GAS TANK INLET.
NHTSA ODI #9004769
Mileage unknown · Aug 14, 2001
Engine And Engine CoolingPower TrainService Brakes, Hydraulic
THE CLUTCH MADE A LOUD POPPING NOISE WHEN LET OUT, AND SLIPPING UNDER LOAD, THE DEALER FOUND THAT THE SLAVE CYLINDER SHAFT WAS WORN CAUSING THROW OUT BEARING TO WOBBLE AND MAKE NOISE, THROUGH OUT BEARING ALSO SCORED, DEALER REPLACED PRESSURE PLATE, CLUTCH DISC ASSEMBLY AND SLAVE CYLINDER ASSEMBLY, CONSUMER ALSO STATES VEHICLE WI…
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THE CLUTCH MADE A LOUD POPPING NOISE WHEN LET OUT, AND SLIPPING UNDER LOAD, THE DEALER FOUND THAT THE SLAVE CYLINDER SHAFT WAS WORN CAUSING THROW OUT BEARING TO WOBBLE AND MAKE NOISE, THROUGH OUT BEARING ALSO SCORED, DEALER REPLACED PRESSURE PLATE, CLUTCH DISC ASSEMBLY AND SLAVE CYLINDER ASSEMBLY, CONSUMER ALSO STATES VEHICLE WILL NOT SHIFT FROM REVERSE.NLM
NHTSA ODI #562502
Mileage unknown · May 11, 2001
Service Brakes, Hydraulic
VEHICLE HAS HAD SEVERAL PROBLEMS WITH BRAKING SYSTEM. DEALER HAS REPAIRED AND REPLACED SEVERAL PARTS OF BRAKING SYSTEM, BUT PROBLEMS STILL EXISTS.*AK
NHTSA ODI #888061
Mileage unknown · Apr 2, 2001
Service Brakes, HydraulicVehicle Speed Control
HAD APPLIED GAS TO SPEED UP AND IT WOULD GO BACK. ENGINE KEPT REVVING, BUT REMAINED AT SAME SPEED. ABS WOULD KICK IN ON ANY SLIPPERY SURFACE. RIGHT FRONT TIRE GRABBED, HARD, AND THEN LOCKED UP WHEN BRAKES WERE APPLIED. AT DEALERSHIP ALL BRAKE PARTS WERE REPAIRED OR REPLACED. *AK
NHTSA ODI #884876
Mileage unknown · Feb 23, 2001
Service Brakes, HydraulicStructure
THE VEHICLE WAS WEIGHED WITH A MEDIUM SIZED VEHICLE IN TOW AND THE WEIGHT WAS 12140, AS PER GM THE TRUCKS MAX GVW RATING IS 11,000, THE VEHICLE WAS BEING USED OVERWEIGHT OF SPECS WHICH CAUSED PREMATURE BRAKE WEAR, THE VEHICLE WAS SOLD TO THE CONSUMER WITH THE UNDERSTANDING THAT THE VEHICLE WOULD BE USED AS A TOW TRUCK, THE CONSU…
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THE VEHICLE WAS WEIGHED WITH A MEDIUM SIZED VEHICLE IN TOW AND THE WEIGHT WAS 12140, AS PER GM THE TRUCKS MAX GVW RATING IS 11,000, THE VEHICLE WAS BEING USED OVERWEIGHT OF SPECS WHICH CAUSED PREMATURE BRAKE WEAR, THE VEHICLE WAS SOLD TO THE CONSUMER WITH THE UNDERSTANDING THAT THE VEHICLE WOULD BE USED AS A TOW TRUCK, THE CONSUMER BELIEVES THAT GM IS SELLING TRUCKS WITH WRECKER PROVISIONS BUT ARE TOO LIGHT TO BE TOW TRUCKS OR THEY ARE SELLING TRUCKS WITH DEFECTIVE BRAKE SYSTEMS, ON ONE OCCASION THE VEHICLE BRAKE PEDAL WENT TO THE FLOOR WHILE THE DRIVER WAS BRAKING AND FAILED CAUSING THE TRUCK TO REAR END ANOTHER VEHICLE. NLM
NHTSA ODI #559915
Mileage unknown · Jan 10, 2001
Service Brakes, HydraulicCrashInjury
WHEN APPLYING BRAKES AT 30MPH PEDAL WENT TO FLOOR ,RESULTING IN EXTENDED STOPPING DISTANCE, AND CAUSING A COLLISION AND INJURY. DEALER AND MANUFACTURER HAS BEEN NOTIFIED.*AK
NHTSA ODI #877849
Mileage unknown · Dec 29, 2000
Service Brakes, HydraulicCrash
REAR BRAKES WERE EXCESSIVELY WEARING OUT EVERY 3-4,000 MILES. BRAKE PEDAL WOULD GO TO FLOOR. WOULD HAVE NO REAR BRAKES WHEN THEY WERE APPLIED. HAD AN ACCIDENT DUE TO LACK OF REAR BRAKES, ON ONE OCCASION DEALER STATED THAT THE REAR BRAKES WERE METAL TO METAL, THE BRAKE PADS WERE SCORCHED, MASTER CYLINDER WAS REPLACED, AND THE B…
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REAR BRAKES WERE EXCESSIVELY WEARING OUT EVERY 3-4,000 MILES. BRAKE PEDAL WOULD GO TO FLOOR. WOULD HAVE NO REAR BRAKES WHEN THEY WERE APPLIED. HAD AN ACCIDENT DUE TO LACK OF REAR BRAKES, ON ONE OCCASION DEALER STATED THAT THE REAR BRAKES WERE METAL TO METAL, THE BRAKE PADS WERE SCORCHED, MASTER CYLINDER WAS REPLACED, AND THE BRAKE PROPORTIONING VALVE WAS REPLACED. CONTACTED MANUFACTURER & INFORMED CONSUMER THAT VIN INDICATED A TOW TRUCK, BUT VEHICLE WAS NOT HEAVY ENOUGH TO BE TOW TRUCK. MANUFACTURER COULD NOT GIVE EXPLAINATION FOR LABELING OF TOW TRUCK. IT COULD NOT BE USED AS A TOW TRUCK.BRAKES WOULD CONTINUE TO WEAR OUT DUE TO NOT BEING HEAVY ENOUGH, ACCORDING TO MANUFACTURER'S EXPLANATION. *AK CONSUMER IS REQUESTING A FIX TO THIS DANGEROUS PROBLEM OR A PRO-RATED REPLACEMENT OF THE VEHICLE. *SLC
NHTSA ODI #877210
Mileage unknown · Dec 26, 2000
Service Brakes, Hydraulic
BACK BRAKES DO NOT WORK PROPERLY, FRONT TIRES WERE REPLACED DUE TO FAULTY RIGHT FRONT BRAKES, CONSUMER STATES THAT THERE HAVE BEEN MANY CLOSE CALLS DUE TO THE FAULTY BRAKES. *SLC
NHTSA ODI #876999
NHTSA investigations
2EA04012 · Hydraulic Pump Failres
Opened Apr 30, 2004 · Closed Feb 28, 2005
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:power Assist; Steering:hydraulic Power Assist System
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
Additional source detail variants (2)
Service Brakes, Hydraulic:power Assist
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
Steering:hydraulic Power Assist System
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
PE04004 · Hydraulic Pump Shaft Failures
Opened Jan 8, 2004 · Closed Apr 30, 2004
Status: closed (inferred from source dates) · Service Brakes, Hydraulic; Service Brakes, Hydraulic:power Assist; Service Brakes, Hydraulic:power Assist:hydraulic; Steering:hydraulic Power Assist System; Steering:hydraulic Power Assist:pump
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Additional source detail variants (5)
Service Brakes, Hydraulic
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Service Brakes, Hydraulic:power Assist
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Service Brakes, Hydraulic:power Assist:hydraulic
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Steering:hydraulic Power Assist:pump
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
Steering:hydraulic Power Assist System
THE PRELIMINARY EVAULATION IS BEING UPGRADED.DURING THE EA ODI WILL LIMITITS INVESTIGATION TO ONLY THOSE VEHICLES EQUIPPED WITH A HYDRO-BOOST SYSTEM, WHICH PROVIDES POWER ASSIST TO THE BRAKING AND STEERING SYTEMS.VACCUUM BRAKE BOOSTER VEHICLES ARE EXCLUDED.ODI HASEXPANDED THE SCOPE OF THE EA TO INCLUDE MODEL YEARS2003 AND 2004, ASDURING THE PE, ODI LEARNED THAT THE HYDROBOAST PUMPS WERE MODIFIED IN FEBRAURY 2004.THEREFORE,ODI HAS EXPANDED THE SCOPE TO INCLUDE THE ADDITIONAL MODEL YEARS.ODI'S IS CONCERNED BECAUSE THISISA SUDDEN FAILURE THAT AFFECTS TWO CRITICAL SYSTEMS OF THE VEHICLE, BRAKES AND STEERING, AT THE SAME TIME.THE ABILITY OF THE OPERATOR TO HANDLE THE DUAL FAILURES IS A CONCERN. FURTHER, THESE VEHICLES TEND TO BE WORK VEHICLES, WITH SOME OVER 10,000 POUNDS GVWR AND MANY EQUIPPED TO PULL LARGE TRAILERS.DUAL FAILURES OF HEAVILY LOADED VEHICLES AND VEHICLES PULLING TRAILERS FURTHER INCREASES THE SAFETY RISK.ODI PLANS TO CONDUCT TESTING TO QUANTIFY THE BRAKING AND STEERING PERFORMANCE DEGRADATION AND THE IMPACT ON SAFE VEHICLE CONTROL, WHEN A HYDROBOAST PUMP FAILS.
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